Current transformer TL-10-3-II-3is designed for installation in complete switchgear (KRU) and serves to signal measurement information instrumentation and (or) protection and control, to isolate the circuits of secondary compounds of high-voltage electrical installations AC voltage class up to 10kV 50Hz or 60Hz.

Calculated values ​​of the nominal current ratio of secondary winding for protection in terms of rated secondary load in accuracy classes 5P and 10P for the instrumentcurrent transformer TL-10-3-II-3 are shown in Table 1;

Table 1 Calculated values ​​of the nominal current ratio of secondary winding for protection in terms of rated secondary load in accuracy classes 5P and 10P for the instrumentcurrent transformer TL-10-3-II-3

Rated secondary current transformer load device TL-10-3-II-3, VA

3

5

10

15

20

30

40

50

60

75

100

Ratio of transformation

Rated current ratio

50/5, 100/5, 200/5, 400/5

42.5

32.5.

20.1

15

11,4

7.9.

6.1

4.9

4,2

3.4

2,5

150/5, 300/5, 600/5

50/1

39.9

26.6

19.9%

15.9

11.3

8.8.

7.2

6.1

4.9

3,7

800/5

53.8

43.3

30.7

23.8

19,4

14.2

11,1

9.2

7.8

64

4.9

1000/5

44,5

38.1

29.6

24.2

20.5

15.6

12,6

10,6

9.1%

7.5

{0}5.8.{/0}{1} {/1}

1500/5

34.3

29.4

24.1

20

17,7

13.9

11.5

9,8

8.5

7.1

5,6

The estimated value of the resistance of the secondary windingcurrent transformer unit TL-10-3-II-3 DC are shown in Table 2;

In current transformers may be used to account for the secondary windings, Class 0,2 S and 0,5 S with the value of the secondary load below 25% of nominal;

The minimum weight for a current transformerwinding deviceTL-10-3-II-3accuracy classes 0,2 S and 0,5 S is 1B · A;

The certificate on the current transformers with secondary windings for accounting accuracy classes 0,2 S and 0,5 S indicates the measured current and the angular error at rated secondary burden 1B · A;

Can manufacture transformers with different transformation ratios of secondary windings;

The manufacturer guarantees that the quality of the instrumentcurrent transformer TL-10-3-II-3technical requirements specifications provided the customer terms and conditions of storage, transportation, installation, operation, and its specified operational documentation.

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